Program Faktorial Menggunakan C#

♫ FAKTORIAL…

using System;

namespace faktorial_011

{

          class Class1

          {

                   static void Main(string[ ] args)

                   {

                             int n,fak,k,l;

                             Console.Write("Masukkan bilangan :");

                             n=Convert.ToInt32(Console.ReadLine());

                             if(n<0)

                             {

                                      Console.WriteLine("Bilangan salah");

                             }

                             if(n==0)

                             {

                                      Console.WriteLine("0!=1");

                             }

                             if(n>0)

                             {

                                      fak=1;

                                      for(k=n;k>=1;k--)

                                      {

                                                l=fak*k;

                                                fak=l;

                                      }

                                      Console.WriteLine("faktorial dari {0} adalah {1}",n,fak);

                             }

                             Console.ReadLine();

                   }

          }

}